Q-Tubes
700c x 35-43mm 32mm Presta Valve Tube 140g

5.0

Q-Tubes 700c x 35-43mm 32mm Presta Valve Tube 140g

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$8⁹⁹

orig: $11⁹⁹ save 25%

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Q-tubes are great reliable replacement tubes that come in a variety of sizes for most applications from the smallest kids bike to world class race bikes.

Presta valve tube have an external thread and are thinner that standard Schrader valve tubes. An adaptor can be fitted onto this external thread to permit the Presta valve to be connected to a pump with a Schrader head.
If you are going to use Presta tubes in a rim that is designed for Schrader tubes you must use an adapter such as the Wheels Manufacturing Presta Saver to prevent damage to the valve stem.
Presta tubes work better in high pressure tires because the valve has no return spring which pushes the valve closed under pressure. You close the valve by turning the valve core shut.

Specifications

ISO Diameter

622 / road / 29"

Labeled Size

700x35-43

Material

Butyl

Tube Style

Standard

Valve Core

Removable

Valve Shaft Type

Threaded

Valve Type

Presta

UPC

708752042292

MPN

556034B7

Tree Fort ID:

333222349848

Review Summary

LIKES

Lightweight (2),

Well Made (2),

Removable Valve Core (2)

WORKS FOR

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DISLIKES

none

5.0 GEARS
3 reviews

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Customer Reviews

January 27, 2011

reviewed by: erjank

These tubes are so good that just by carrying one in my pannier, I have avoided getting flat tires. The cardboard box is starting to wear out faster than I wanted. I hope there is a rubber band inside keeping it from flopping all over once the box disintegrates completely. Pretty much the best spare tubes I've ever hauled to and from work on a daily basis.